Chiefs linebacker Jovan Belcher watches from the sideline during his final game, against the Denver Broncos at Arrowhead Stadium on Nov. 25. / Jamie Squire, Getty Images

by Lindsay H. Jones, USA TODAY Sports

by Lindsay H. Jones, USA TODAY Sports

KANSAS CITY, Mo. - Jovan Belcher legally owned the handgun police say he used to fatally shoot his girlfriend and himself on Saturday.

Kansas City Police spokesman Darin Snapp said he believes Belcher, 25, used the same gun in both shootings, which happened within roughly 20 minutes of each other Saturday morning.

Belcher fired multiple shots, though police are not saying how many, at Kasandra Perkins, 22, after an argument at their home in southeast Kansas City. Police said they found her body in the master bathroom of the home she shared with Belcher. She was pronounced dead at the hospital.

With Perkins dying, Belcher then made a 10-minute drive in his black Bentley to the Kansas City Chiefs practice facility, where he stepped behind a vehicle and fired one fatal shot to his head after talking to Chiefs general manager Scott Pioli, head coach Romeo Crennel and an assistant coach in the parking lot, police said.

Belcher killed himself, police said, when he saw cops arriving at the scene. He was pronounced dead at a local hospital.

Police received the 911 calls nine minutes apart, first at 7:52 a.m. to respond to the couple's home on Crysler Avenue, and then at 8:01 a.m. to respond to the Chiefs facility.

Snapp said Belcher had legally purchased the handgun he used on Saturday.

"We know he owned more than one gun. He wasn't a collector, but he had several," said Snapp, who refused to say how many guns police found at the home.

Kansas City police will be completing their investigation and turning over their reports to the Jackson County District Attorney's office in coming days.

The Kansas City Medical Examiner's Office completed autopsies on the bodies of both Belcher and Perkins on Monday. The coroner will not release partial autopsy results, including cause of death, until the full autopsy reports are completed in more than a month. The full autopsy report will include the results of toxicology tests.

The bodies of Perkins and Belcher have been released to their families, and funeral arrangements are pending.